socalwdup

Hi. I installed foglights on my 2009 c63 but the foglights keep flickering on both sides wheneer i turn the handle left or right.

it happens very randomly too.

perhaps because it is 6k HID fog lights?

Mort

I think they are cornering fog lights and come on at low speeds (>40km/h) when you turn the steering wheel to help see around corners. The fact they are 6000K should have nothing to do with it. The fact they are HID may be why they are flickering if they take a minute to warm up to temperature.

raymond g-

sounds as though you installed an HID kit into your halogen based fog light
housing. is that right? if so, it's not unexpected that it would flicker. the
system is designed to expect a certain current/resistance based on the
halogen design

jvanbrecht

HID's are similar to Fluorescent bulbs, only a different kind of light. They require high voltage initially to turn on, then a smaller maintained voltage to stay on. There is usually a voltage regular inline on the circuit for HID based lights.

Halogens do not have any of this requirement, and usually only have a switch (light stalk, turning, button, whatever), between the power source and the bulbs. This is usually considered a dirty power source, or unregulated.

The 2 types of lights are not interchangeable.

In fact, HIDs are not meant to be turned on and off constantly as that adds significant wear to an expensive bulb. (Side note, HID headlamps, like the kind I have for my night bicycling, the on and off of the HID destroys the batteries)

bhamg

Exactly...that IMO makes them particularly ill-suited for the cornering-light function of our fog lamps.

NCBob

Go to the W204 C300 site and do a search. There are cures for flickering HIDs. All the info you need is there.